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[PATCH] FDPIC: fix the /proc/pid/stat representation of executable boundaries
[firefly-linux-kernel-4.4.55.git]
/
fs
/
binfmt_elf_fdpic.c
diff --git
a/fs/binfmt_elf_fdpic.c
b/fs/binfmt_elf_fdpic.c
index 5810aa1339fdeb5d6d98dd857328998bcde733e5..47d6d49d1fb9c393328adb82cd725b67f770aede 100644
(file)
--- a/
fs/binfmt_elf_fdpic.c
+++ b/
fs/binfmt_elf_fdpic.c
@@
-179,6
+179,8
@@
static int load_elf_fdpic_binary(struct linux_binprm *bprm,
int executable_stack;
int retval, i;
int executable_stack;
int retval, i;
+ kdebug("____ LOAD %d ____", current->pid);
+
memset(&exec_params, 0, sizeof(exec_params));
memset(&interp_params, 0, sizeof(interp_params));
memset(&exec_params, 0, sizeof(exec_params));
memset(&interp_params, 0, sizeof(interp_params));
@@
-941,8
+943,11
@@
static int elf_fdpic_map_file_constdisp_on_uclinux(
if (mm) {
if (phdr->p_flags & PF_X) {
if (mm) {
if (phdr->p_flags & PF_X) {
- mm->start_code = seg->addr;
- mm->end_code = seg->addr + phdr->p_memsz;
+ if (!mm->start_code) {
+ mm->start_code = seg->addr;
+ mm->end_code = seg->addr +
+ phdr->p_memsz;
+ }
} else if (!mm->start_data) {
mm->start_data = seg->addr;
#ifndef CONFIG_MMU
} else if (!mm->start_data) {
mm->start_data = seg->addr;
#ifndef CONFIG_MMU
@@
-1123,8
+1128,10
@@
static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
if (mm) {
if (phdr->p_flags & PF_X) {
if (mm) {
if (phdr->p_flags & PF_X) {
- mm->start_code = maddr;
- mm->end_code = maddr + phdr->p_memsz;
+ if (!mm->start_code) {
+ mm->start_code = maddr;
+ mm->end_code = maddr + phdr->p_memsz;
+ }
} else if (!mm->start_data) {
mm->start_data = maddr;
mm->end_data = maddr + phdr->p_memsz;
} else if (!mm->start_data) {
mm->start_data = maddr;
mm->end_data = maddr + phdr->p_memsz;